Printer&#39;s quoin



Oct. 19240 I H. H. HANGOCK PRINTER S QUOIN Filed Jam. 25, 1923 Fig. 4 30 "I man 4 Q/ 0 I nae/1115f flurry EEancock ers Quoins,

' Other objectsof the invention Patented ct. 7, 1924 HARRY H. nanoocx, or swamrscorr, MASSACHUSETTS, assrenoa T0 HENRY a.

sawvna, or LYNN, reassaonnsnrrs.

rnrnrnas acorn.

Application filed January 25, 1923.

To all whom it may concern:

Be it known that I, HARRY H. Hancock, a citizen of the United States. residing at Swampscott, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Printof which the following is a specification.-

The present invention relates to an improvement in printers quoins generally, and more particularly, upon the one shown, de scribed and claimed in my co-pending application, Serial No. 530.569, filed January 20, 1922. An object of the present invention is to produce a quoin which is comparatively thin or narrow,but which may be expanded to a relatively large extent as compared with its narro-wness. Another objectof the invention is to provide improved guiding means for the side members of the quoin which will facilitate greater range of expansion of the quoin. will appear hereinafter.

These being among the objects of the present invention the same consists of 'certain features of construction and combinations of parts to be hereinafter described and then claimed with reference to the accompanying drawings illustrating a desirable embodiment of theinvention, and in which Fig. 1 is a perspective view of the improved quoin; I

Fig. 2 is a top view, partly in section, and parts in dotted lines; r

Fig. 3 is aside elevation, partly broken away;

Fig. 4 is a top view. partly broken away, showing the quoin fully expanded; and

Fig. 5 is a transverse section of the quoin when it is contracted.

The metallic side members 10, 11 of the I quoin are provided with inclined inner faces 12. 12 in their lower portions, the faces converging towards each other. A wedge 13 is adapted to act against the inclined faces for the purpose of expanding the .quoin, and it isprovided with a screwthreaded opening 14 for receivin g the screwthreaded stem 15 of a screw having a head 16. Preferably, the screw-threads are squarein cross section. as shown. The head of the screw is provided with a socket 17, preferably square. The head 16 is adapted Serial No. 614,743.

\ to turn upon the side members 10,11 when a suitable wrench is applied to the socket 17 and ad ust the wedge. 7 One of the side members of the quoin carries a guide-pin 18, preferably of metal tubing, while the other member carries another similar guide-pin 19. The opposite ends of the two guide-pins 19 at opposite sides of the quoin are provided with out ward annular shoulders 20, 21, and the other ends, of the guide-pins are adapted to be screwed into the side members which carry the pins, as indicated at 22. When the side members 10, 11 are pressed together or con tracted, so that the inner faces thereof are in contact, and the wedge is in its lowermost position, the length of each guide-pin 18, 19 is preferably equal to the combined widths of the side members.

As each side member carries a guide-pin at one end, so that there is one such pin at opposite ends of thequoin, that end of the other side member which is opposite one of said guide-pins carries a guide 23 or 24, as

the case may be, each of the said guides be-- ing preferably composed of similar metal tubing. Guide 23 is provided with an inward annular shoulder 25,the edge of which fits snugly yet slidably upon the corresponding guide-pin, whilethe other guide 24 is provided with an inward annular shoulder 26 to fit on and. receive its corresponding guide-pin, so that the members of the guiding means at corresponding ends of the side members are a'diust-able upon each other, or telescoped together. The opposite unshouldered end of one guide preferably has a drive fit with its corresponding side member, while the I corresponding end of the other side member is provided with a. socket 36, intothe closed end of which the corresponding guide-pin is preferably screwed, as described, and surrounding such guidepin said socket forms a recess to receive and telescope with the shouldered end of the said guide when the side members are con tracted. There is a similar arrangement for the guide at the other end ofthe quoin. The length of the guides 23, 24 is somewhat less than the width of the quoin when paneled considerably relatively to its thicl:-

ness, that is. the gap which is formed bet zveen the side members by the adjustment of the quoin may be increased to considerable varying degrees, for the reason that the guide members of each guiding means are adapted to be nested, as it were, into botlr of the side members. Considering, therefore, the extent of width to which the quoin may be expanded, the amount of metal used in the side members is reduced to a minimum. In some printers shops guiding means as described migl'it be all that is desired, but in others, it might be preferred to have the quoin provided with springs which are adapted to automatically contract the quoin whenever the adjustingscre-w 1.5 is screwed into the wedge 13. To this end, in each. guiding means the space between the inner wall of the guide and the outer wall of the guide-pin is provided with a helical expansion-spring 27 or 28, each spring having preferably a very few convolutions, and the ends of each spring bear upon the respective shoulders of the guide and guide-pin.

Each guide-pin 18, 19 is preferably pro vided with a nick or notch 29 for the purpose of enabling a screwdriver to be applied for the purpose of attaching or detaching each guide-pin, and instead of being made t-ulnilar, it is obvious that each guide-pin may be solid. A cavity 530 is formed at the midlength of each side member 10, 11, and it is preferably semi-circular so as to conform to the circularity of the head 16 of the adjusting-screw, the two semicircular cavities providing a recess to receive the head of the screw snugly when the side members are drawn together in contact. Preferably, the inclined inner faces 12 of the side members 1.0, 11 constitute the side walls of recesses cut in the side members, and the ends of which are formed by parallel walls 32, so that the length of each recess is less than the distance between the two guiding means, so that the height to which the wedge received in said recesses may be raised by the ad justing-screw is not restricted by the guiding means, as the wedge in its uppermost position will be located between these two gui d in g means.

Preferably, means are provided for connecting the adjusting-screw 15 with the wedge 13, so that the two will not become disconnected when the screw is screwed from the wedge as far as desirable. To this end, the threaded portion of adjustingscrew 15 has an internally screw-threaded bore at its lower end, or the end away from the head 16, for the purpose or" receiving the screw-threaded stem of a set-screw 33, the head of which is countersunk in a recess 34 in the bottom or wider portion of the wedge, the diameter of the head of set-screw 33 bein greater than the diameter of the adjusting-screw, and the edge of the setscrew head forming an abutment and being adapted to come in Contact with a shoulder The thread for the set-screw 33 is reverse to the thread for the adjustingscrew of the quoin.

It obvious that the invention may be variously modified without departing from the spirit and scope thereof as defined in the claims.

What I claim as new is:

1. In a printers quoin, the combination of side members, projecting guides carried by one of the members, projecting guides carried by the other member and adjustable on aforesaid guides, each of said guides extending within both of the side members, and means for forcing said members apart.

2. In a printers quoin, the combination of side members, projecting guides carried by one of the members, projecting guides carried by the other member and adjustable on aforesaid guides, means for forcing said members apart, and helical springs for drawing the members together.

3. In a printers quoin, the combination of side members, projecting guide-tubes carried by one of the members, projecting guides carried by the other member and telescoping in said guide-tubes, said tubes and guides being pieces separate from and extending within both side members, and means for forcing said members apart.

4B In a printers quoin, the combination of side members, telescoping pairs of guides carried by and connecting the members, the outer guide of each pair telescoping with one of the side members. and means for forcing said members apart.

5. In a printers quoin, the combination of side members, telescoping pairs of guides carried by and connecting the members, one of the guides of each. pair telescoping with one of the side members, and means for forcing said members apart, and springs arranged within the telescoping guides, and arranged to draw the members together.

6. In a printers quoin, the combination of side members having inclined, converging, inner faces, a wedge bearing on said faces and having a screw-threaded opening,

an. adjusting-screw engaged in said opening and having a head at one end bearing on said side members, means associated with the threaded opposite end of the screw con meeting the wedge and screw and constituting an abutment for the wedge, thereby preventing detachment of the screw hr the Wedge from the quoin, and guide means for connecting the side members.

7. In a printers quoin, the combination of side members having inclined, converging, inner faces, a wedge bearing on said faces and having a screw-threaded opening,

an adjusting-screw engaged in said opening and having a head bearing on said side members, pro ectlng guldes carried by one of the members, and projecting guides carried by the other member and adjustable on aforesaid guides. Y

8. In a printers quoin, the combination of side members having inclined, converg- 10 ing, inner faces, a Wedge bearing on said faces and having a screw-threaded opening,

an adjusting-screw engaged in said opening and having a head bearing on said side members, projecting guides carried by one of the members, and projecting guides carried by the other member and adjustable on aforesaid guides, and springs acting to draw said 1 members together.

HARRY H. HANCOCK; 

